HYBRID/TROUBLE SHOOTING
3–590
12
Inspecting the
exciting volt-
age of inverter
start relay
1. Connect all the connectors that
have been disconnected.
2. Set the starter key to the "ON"
position.
3. Using the electrical tester, mea-
sure the voltage between the
27th terminal of HV ECU2 con-
nector and the ground.
<Measurement conditions>
Starter key: ON
<Tester connections>
HV ECU2 connector
27th terminal – GND
<Standard values>
10 – 16 V
The mea-
sured value is
within the
range of stan-
dard value: Go
to YES.
The mea-
sured value is
not within the
range of stan-
dard value: Go
to NO.
Go to step 13.
Replace the
HV ECU. After
replacement,
go to step 13.
13
Inspecting the
inverter start
relay
1. Using the electrical tester, mea-
sure the voltage between the
terminals of inverter start relay
connector (relay block side)
and the ground.
<Measurement conditions>
Starter key: ON
<Tester connections>
Inverter start relay connector
(relay block side)
1st terminal – GND
5th terminal – GND
<Standard values>
10 – 16 V
The mea-
sured value is
within the
range of stan-
dard value: Go
to YES.
The mea-
sured value is
not within the
range of stan-
dard value: Go
to NO.
Go to step 14.
Replace the
inverter start
relay. After
replacement,
go to step 14.
14
Inspecting the
inverter cool-
ing radiator fan
2
1. Set the starter key to the
"LOCK" position.
2. Set the starter key to the "ON"
position and check the operat-
ing sound of inverter cooling
radiator fan.
Operating
sound is
checked: Go
to YES.
Operating
sound is not
checked: Go
to NO.
Go to step 15.
Replace the
inverter cool-
ing radiator
fan. After
replacement,
go to step 15.
15
Inspecting the
inverter cool-
ing pump 1
1. Set the starter key to the
"LOCK" position.
2. Set the starter key to the "ON"
position and check the operat-
ing sound of inverter cooling
pump.
Operating
sound is
checked: Go
to YES.
Operating
sound is not
checked: Go
to NO.
Go to step 16.
Replace the
inverter cool-
ing pump.
After replace-
ment, go to
step 16.
P0A3C (TC34)
Abnormality in inverter cooling system
Inspection Procedure
Step
Action
Description
Judgement
Check
(Yes/No)
Yes
No